19661880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:373

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 48766920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 89, 105, 120, 140, 168, 178, 210, 263, 267, 280, 356, 420, 445, 526, 534, 623, 712, 789, 840, 890, 1052, 1068, 1246, 1315, 1335, 1578, 1780, 1841, 1869, 2104, 2136, 2492, 2630, 2670, 3115, 3156, 3560, 3682, 3738, 3945, 4984, 5260, 5340, 5523, 6230, 6312, 7364, 7476, 7890, 9205, 9345, 10520, 10680, 11046, 12460, 14728, 14952, 15780, 18410, 18690, 22092, 23407, 24920, 27615, 31560, 36820, 37380, 44184, 46814, 55230, 70221, 73640, 74760, 93628, 110460, 117035, 140442, 163849, 187256, 220920, 234070, 280884, 327698, 351105, 468140, 491547, 561768, 655396, 702210, 819245, 936280, 983094, 1310792, 1404420, 1638490, 1966188, 2457735, 2808840, 3276980, 3932376, 4915470, 6553960, 9830940, 19661880]

約数ペア:

[(1, 19661880), (2, 9830940), (3, 6553960), (4, 4915470), (5, 3932376), (6, 3276980), (7, 2808840), (8, 2457735), (10, 1966188), (12, 1638490), (14, 1404420), (15, 1310792), (20, 983094), (21, 936280), (24, 819245), (28, 702210), (30, 655396), (35, 561768), (40, 491547), (42, 468140), (56, 351105), (60, 327698), (70, 280884), (84, 234070), (89, 220920), (105, 187256), (120, 163849), (140, 140442), (168, 117035), (178, 110460), (210, 93628), (263, 74760), (267, 73640), (280, 70221), (356, 55230), (420, 46814), (445, 44184), (526, 37380), (534, 36820), (623, 31560), (712, 27615), (789, 24920), (840, 23407), (890, 22092), (1052, 18690), (1068, 18410), (1246, 15780), (1315, 14952), (1335, 14728), (1578, 12460), (1780, 11046), (1841, 10680), (1869, 10520), (2104, 9345), (2136, 9205), (2492, 7890), (2630, 7476), (2670, 7364), (3115, 6312), (3156, 6230), (3560, 5523), (3682, 5340), (3738, 5260), (3945, 4984)]